function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ebrahimi, E. & Schmid, C. & Wahis, R.', 1],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 4],
    ['Enayatnia, Masoumeh & Rakhshani, Ehsan & Kroupa, Alexander S.', 6],
    ['Gadallah, Neveen S. & Schmid-Egger, Christian', 8],
    ['Kurczewski, Frank E. & West, Rick C. & Waichert, Cecilia', 19],
    ['Loktionov, V. M.', 2],
    ['Loktionov, Valery M.', 4],
    ['Madl, Michael', 9],
    ['Madl, Michael & P, Cryptocheilus & D, Cyphononyx', 4],
    ['Marinho, Diego & Vivallo, Felipe', 2],
    ['Schedl, Wolfgang', 1],
    ['Shimizu, Akira & Wasbauer, Marius & Takami, Yasuoki', 1],
    ['Waichert, Cecilia & Rodriguez, Juanita & Von Dohlen, Carol D.', 4],
    ['Wolf, H. & D-R', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);